Handheld servo electric screwdriver

Abstract

The utility model relates to the technical field of machining, and particularly discloses a handheld servo electric screwdriver which comprises an electric screwdriver cap, a servo motor, an electric screwdriver handheld portion and an electric screwdriver chuck portion which are sequentially arranged from top to bottom, and the electric screwdriver cap is provided with an aviation plug, a start-stop photoelectric control panel, a start-stop switch and a forward and reverse rotation switch. The aviation plug, the servo motor, the start-stop switch and the forward and reverse rotation switch are all electrically connected with the start-stop photoelectric control panel, the servo motor is in transmission connection with an electric screwdriver chuck main shaft through a transmission shaft, and an electric screwdriver chuck push-pull sleeve is arranged at the bottom of the electric screwdriver chuck part. The bottom of the electric screwdriver chuck main shaft is located on the inner side of the electric screwdriver chuck push-pull sleeve. The start-stop switch and the forward and reverse rotation switch are arranged to control start-stop and forward and reverse rotation of the servo motor, the servo motor drives the electric screwdriver chuck main shaft to rotate to output torsion, the torque is large, the rotating speed is moderate, heating is small, mechanical abrasion is avoided, and therefore the service life is long, and the failure rate is low.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to a handheld servo electric screwdriver. Background Art

[0002] Electric screwdrivers, also known as electric screwdrivers and electric screwdrivers, are electric tools used to tighten and loosen screws. They are mainly used in assembly lines and are one of the essential tools for most manufacturing companies. There are two main types of handheld electric screwdrivers on the market: mechanical clutch electric screwdrivers and coreless motor electric screwdrivers. The mechanical clutch electric screwdriver uses a DC motor to drive the screw rod mechanism to rotate. The clutch force can be adjusted to cut off the DC motor power supply to control the output torque of the electric screwdriver. Due to mechanical wear, the life is short and the failure rate is high. The coreless motor electric screwdriver uses a brushless DC motor with a reducer to drive the screw rod mechanism to rotate. The output torque of the electric screwdriver is controlled by the current of the driving motor. Since the coreless screwdriver has a high speed and low torque, the current is large and the heat is serious. Utility Model Content

[0003] The technical problem to be solved by the utility model is that, in view of the above-mentioned defects of the prior art, a hand-held servo electric screwdriver is provided, which controls the start and stop and forward and reverse rotation of the servo motor by setting a start-stop switch and a forward and reverse switch, and the servo motor drives the main shaft of the electric screwdriver chuck to rotate and output torque, with large torque, moderate speed, low heat, and no mechanical wear, so that the service life is long and the failure rate is low.

[0004] In order to solve the above technical problems, the technical solution of the utility model is:

[0005] A handheld servo electric screwdriver comprises an electric screwdriver cap, a servo motor, an electric screwdriver handheld part and an electric screwdriver chuck part which are arranged in sequence from top to bottom, the electric screwdriver cap is provided with a navigation plug, a start-stop photoelectric control board, a start-stop switch and a forward-reverse switch, the navigation plug, the servo motor, the start-stop switch and the forward-reverse switch are all electrically connected to the start-stop photoelectric control board, the servo motor is connected to the electric screwdriver chuck spindle through a transmission shaft, an electric screwdriver chuck push-pull sleeve is provided at the bottom of the electric screwdriver chuck part, and the bottom of the electric screwdriver chuck spindle is located on the inner side of the electric screwdriver chuck push-pull sleeve.

[0006] Preferably, the servo motor comprises a motor body and a motor rotor arranged inside the motor body, and the motor rotor is drivingly connected to the transmission shaft.

[0007] Preferably, the upper end of the motor body is connected to the electric screwdriver cap through the motor rear end cover, and the bottom of the motor body is connected to the electric screwdriver handheld part through the motor front end cover.

[0008] Preferably, the aviation plug is arranged at the upper end of the electric screwdriver cap, and the upper end of the electric screwdriver cap is provided with an aviation plug installation through hole adapted to the aviation plug.

[0009] Preferably, the start-stop switch and the forward-reverse switch are respectively located on the outside of the motor body, and the start-stop photoelectric control panel is arranged on the inside of the electric screwdriver cap.

[0010] Preferably, the push-pull sleeve of the electric screwdriver chuck is slidably mounted on the outer side of the bottom of the electric screwdriver chuck main shaft, and a clamping groove is provided at the bottom of the electric screwdriver chuck main shaft.

[0011] By adopting the above technical scheme, the utility model provides a hand-held servo electric screwdriver, which has the following beneficial effects: a navigation plug, a start-stop photoelectric control board, a start-stop switch and a forward-reversing switch are arranged on the electric screwdriver cap in the hand-held servo electric screwdriver, and the navigation plug, the servo motor, the start-stop switch and the forward-reversing switch are all electrically connected to the start-stop photoelectric control board, and the servo motor is connected to the electric screwdriver chuck spindle through a transmission shaft, and the electric screwdriver chuck spindle is connected to an electric screwdriver chuck push-pull sleeve, and the electric screwdriver chuck push-pull sleeve passes through the outside of the electric screwdriver chuck head, and the start-stop switch and the forward-reversing switch are set to control the start and stop and forward-reversing of the servo motor, and the servo motor drives the electric screwdriver chuck spindle to rotate and output torque, with large torque, moderate speed, low heat, and no mechanical wear, thereby extending the service life of the electric screwdriver, and reducing the failure rate, which is relatively low. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is an exploded view of the utility model;

[0013] Figure 2 It is a three-dimensional diagram of the utility model;

[0014] In the figure, 1-electric screwdriver cap, 2-electric screwdriver handpiece, 3-electric screwdriver chuck head, 4-aviation plug, 5-start and stop photoelectric control board, 6-start and stop switch, 7-forward and reverse switch, 8-transmission shaft, 9-electric screwdriver chuck spindle, 10-electric screwdriver chuck push and pull sleeve, 11-motor body, 12-motor rotor, 13-motor rear end cover, 14-motor front end cover, 15-aviation plug installation through hole, 16-clamping groove. DETAILED DESCRIPTION

[0015] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each implementation method of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0016] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0017] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0018] like Figure 1-2 As shown, the handheld servo electric screwdriver includes an electric screwdriver cap 1, a servo motor, an electric screwdriver handheld part 2 and an electric screwdriver chuck part 3 which are arranged in sequence from top to bottom. The electric screwdriver cap 1 is provided with a navigation plug 4, a start-stop photoelectric control board 5, a start-stop switch 6 and a forward and reverse switch 7. The navigation plug 4, the servo motor, the start-stop switch 6 and the forward and reverse switch 7 are all electrically connected to the start-stop photoelectric control board 5. The servo motor is connected to the electric screwdriver chuck spindle 9 through the transmission shaft 8. The bottom of the electric screwdriver chuck part 3 is provided with an electric screwdriver chuck push-pull sleeve 10, and the bottom of the electric screwdriver chuck spindle 9 is located on the inner side of the electric screwdriver chuck push-pull sleeve 10. It can be understood that the navigation plug 4 is used to connect to an external power supply, and the start-stop photoelectric control board 5 can be a universal electric screwdriver control circuit board, etc., which is used to receive the trigger signals of the start-stop switch 6 and the forward and reverse switch 7 and output corresponding control signals to control the start and stop and forward and reverse rotation of the servo motor; the servo motor can adopt a universal iron core servo motor, etc.

[0019] Specifically, the servo motor includes a motor body 11 and a motor rotor 12 arranged on the inner side of the motor body 11, and the motor rotor 12 is transmission-connected to the transmission shaft 8; the upper end of the motor body 11 is connected to the electric screwdriver cap 1 through the motor rear end cover 13, the bottom of the motor body 11 is connected to the electric screwdriver handheld part 2 through the motor front end cover 14, and the bottom of the electric screwdriver handheld part 2 is threadedly connected to the upper end of the electric screwdriver chuck part 3; the aviation plug 4 is arranged at the upper end of the electric screwdriver cap 1, and the upper end of the electric screwdriver cap 1 is provided with an aviation plug mounting through hole 15 adapted to the aviation plug 4; the start-stop switch 6 and the forward and reverse switch 7 are respectively located on the outer side of the motor body 11, and the start-stop photoelectric control board 5 is arranged on the inner side of the electric screwdriver cap 1; the electric screwdriver chuck push-pull sleeve 10 is slidably installed on the outer side of the bottom of the electric screwdriver chuck spindle 9, and the bottom of the electric screwdriver chuck spindle 9 is provided with a clamping groove 16. It can be understood that compared with the traditional electric screwdriver, the utility model can speed up the heat dissipation and has a good heat dissipation effect by exposing the motor body 1 and eliminating the need for an additional shell. The utility model adopts a universal iron-core servo motor structure to drive the screw rod mechanism to rotate, and the start-stop switch and forward and reverse switch are located on both sides of the servo motor. The wiring harness is plugged in from the top of the electric screwdriver with an aviation plug.

[0020] It can be understood that the utility model has a reasonable design and unique structure. It adopts a universal iron-core servo motor structure with large torque, moderate speed and low heat. Since the motor is directly connected to the screw rod mechanism to rotate and output torque, there is no mechanical wear, so the service life is long and the failure rate is low. Through lightweight design, the electric screwdriver body has a light weight. Through ergonomic design, the start-stop switch and forward and reverse switch have a good feel, which reduces the fatigue strength of screw driving.

[0021] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A handheld servo electric screwdriver, characterized by: It includes an electric screwdriver cap, a servo motor, an electric screwdriver handpiece and an electric screwdriver chuck portion which are arranged in sequence from top to bottom; the electric screwdriver cap is provided with a navigation plug, a start-stop photoelectric control board, a start-stop switch and a forward-reverse switch; the navigation plug, the servo motor, the start-stop switch and the forward-reverse switch are all electrically connected to the start-stop photoelectric control board; the servo motor is connected to the electric screwdriver chuck spindle through a transmission shaft; an electric screwdriver chuck push-pull sleeve is provided at the bottom of the electric screwdriver chuck portion; the bottom of the electric screwdriver chuck spindle is located on the inner side of the electric screwdriver chuck push-pull sleeve.

2. The handheld servo electric screwdriver according to claim 1, characterized in that: The servo motor comprises a motor body and a motor rotor arranged inside the motor body, and the motor rotor is drivingly connected to the transmission shaft.

3. The handheld servo electric screwdriver according to claim 2, characterized in that: The upper end of the motor body is connected to the electric screwdriver cap through the motor rear end cover, and the bottom of the motor body is connected to the electric screwdriver handheld part through the motor front end cover.

4. The handheld servo electric screwdriver according to claim 1, characterized in that: The aviation plug is arranged at the upper end of the electric screwdriver cap, and the upper end of the electric screwdriver cap is provided with an aviation plug installation through hole adapted to the aviation plug.

5. The handheld servo electric screwdriver according to claim 2, characterized in that: The start-stop switch and the forward-reverse switch are respectively located on the outside of the motor body, and the start-stop photoelectric control panel is arranged on the inside of the electric screwdriver cap.

6. The handheld servo electric screwdriver according to claim 1, characterized in that: The push-pull sleeve of the electric screwdriver chuck is slidably installed on the outer side of the bottom of the main shaft of the electric screwdriver chuck, and a clamping groove is arranged at the bottom of the main shaft of the electric screwdriver chuck.

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